package servlet;


import com.jspsmart.upload.File;
import com.jspsmart.upload.SmartUpload;
import com.jspsmart.upload.SmartUploadException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspFactory;
import javax.servlet.jsp.PageContext;
import java.io.IOException;

@WebServlet(urlPatterns = "/uploadtest")
public class UploadServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req,resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //1.创建上传文件的对象
        SmartUpload smartUpload = new SmartUpload();
        //2.初始化上传操作
        PageContext pageContext = JspFactory.getDefaultFactory().getPageContext(this, req, resp, null, false, 1024, true);
        smartUpload.initialize(pageContext);
        //2.1 设置编码
        smartUpload.setCharset("utf-8");
        //3.上传
        try {
            smartUpload.upload();
        } catch (SmartUploadException e) {
            e.printStackTrace();
        }

        //4.获取文件信息
        File file = smartUpload.getFiles().getFile(0);

        String fileName = file.getFileName();
        String contentType = file.getContentType();
        //5.指定上传的路径
        String uploadPath = "/uploadfiles/"+fileName;
        //6.保存到指定位置
        try {
            file.saveAs(uploadPath,File.SAVEAS_VIRTUAL);
        } catch (SmartUploadException e) {
            e.printStackTrace();
        }
        //7.跳转到指定页面
        req.setAttribute("fileName",fileName);
        req.getRequestDispatcher("show.jsp").forward(req,resp);

    }
}
